In this Letter, we present results from our exploratory mid-IR study of Centaurus A circumnuclear environment using high angular resolution imaging at the Magellan 6.5 m telescope with the MIRAC/BLINC camera. We detected emission from a compact region surrounding the nuclear source and obtained photometry at 8.8μm and in the N band. Our analysis suggests that the nuclear region is resolved with a size of ≈ 3 pc. The mid-IR emission from this region is likely associated with cool dust with an estimated temperature of ∼160 K, surrounding the central "hidden" active galactic nucleus (AGN). We discuss the characteristics of this emission in relation to other mid-IR observations and the implications on models of dust formation in AGNs.
- Galaxies: active
- Galaxies: individual (Centaurus A, NGC 5128)
- Galaxies: nuclei
- Techniques: high angular resolution
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science